No
The literary device that is used here is repetition.
Personification
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metaphor
PersonificationIrony
Sophocles included many literary devices that helped tell the story. The most used literary device in the play is dramatic irony. Another literary device used by Sophocles is characterization. In Oedipus the King, Sophocles used characterization to portray Oedipus as the tragic hero. A third literary device used in the play is flashback, which is where the story switches from the present to an event that occurred in the past.
Prose
onomatopoeia
You have left out a word in your question. What I suspect you meant to ask is "What literary device is used to ease some of the dramatic tension that has been established." If that is what you are asking, the answer is comic relief.
Assonance is the literary device used in the phrase "How are you now brown cow", where the similar vowel sounds of the words "now" and "brown" are repeated.
Idiom